Method for recovering and processing discarded fluorescent lamp

Abstract

This invention relates to a method for recovering and processing waste fluorescent lamps of straight fluorescent lamps, energy-saving lamps and rare earth three-basic color lamps including: safely cutting a waste fluorescent lamp to recover gas Hg, recovering Al caps, brass bolts, filament metals and adhesive Hg, recovering Hg in relaxed fluorescent powder and separating and recovering rare earthelements and other valuable elements from fluorescent powder by fire and recovering Hg and rare earth elements in the glass and adhered powder by a fire method, which applies one time of fire method to recover and separate Hg, rare earth and other valuable elements in fluorescent powder and the special recovery reaction bake oven includes a master reaction oven and several ovens controlling temperature independently.

Description

A method for recycling waste fluorescent lamps Technical field: The invention relates to a method for recovering waste fluorescent lamps including high-efficiency straight-tube fluorescent lamps for daily lighting, energy-saving lamps, and rare-earth three-color fluorescent lamps, and belongs to the recycling and processing technology of solid waste. Background technique: As people's awareness of energy conservation and environmental protection continues to increase, high-efficiency straight tube fluorescent lamps, energy-saving lamps, and rare-earth three-color fluorescent lamps have gradually replaced traditional incandescent lamps and become the largest light source for lighting. However, because fluorescent lamps use mercury as an active active ingredient, different manufacturers and different types of lamp tubes in different manufacturing years contain varying amounts of mercury vapor or solid mercury compounds (such as an ordinary 40W fluorescent tube (T12) about Mer...

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Problems solved by technology

In addition, there is a small amount of gas in the tube, usually Ar gas. Although the amount of toxic mercury is small, it is ubiquitous in these parts and exists in different forms.

Judging from the existing waste light source separation technology at home and abroad, it is basically in its infancy, and most of them adopt simple crushing and landfill or incineration methods. As a result, on the one hand, the pollution source cannot be completely removed, and on the other hand, it causes a large amount of resources. waste

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